tlsdate: Add "unblocked_terms.txt".

There are a few terms to clean up.

BUG=b:195290310
TEST=Upload

Change-Id: I0c83dd6f187613bbd21c49c9b8ab36e4321d6863
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/tlsdate/+/3067498
Commit-Queue: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Pavol Marko <pmarko@chromium.org>
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Auto-Submit: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Pavol Marko <pmarko@chromium.org>
diff --git a/unblocked_terms.txt b/unblocked_terms.txt
new file mode 100644
index 0000000..4b7e644
--- /dev/null
+++ b/unblocked_terms.txt
@@ -0,0 +1,12 @@
+# KEEP THIS COMMENT IN YOUR COPY.
+#
+# Don't delete this file if you want to keep keyword_check enabled even if it's
+# empty.
+#
+# See repohooks/README.md for more details.
+
+dummy
+master
+\bmitm(\b|\d)
+\b(in)?sane(\b|\d)
+sanity